4993402121 has 2 divisors, whose sum is σ = 4993402122. Its totient is φ = 4993402120.

The previous prime is 4993402067. The next prime is 4993402171. The reversal of 4993402121 is 1212043994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4993400896 + 1225 = 70664^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 4993402121 - 2¹⁴ = 4993385737 is a prime.

It is not a weakly prime, because it can be changed into another prime (4993402171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2496701060 + 2496701061.

It is an arithmetic number, because the mean of its divisors is an integer number (2496701061).

Almost surely, 2^4993402121 is an apocalyptic number.

It is an amenable number.

4993402121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4993402121 is an equidigital number, since it uses as much as digits as its factorization.

4993402121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 4993402121 is about 70664.0086677794. The cubic root of 4993402121 is about 1709.2234679694.

The spelling of 4993402121 in words is "four billion, nine hundred ninety-three million, four hundred two thousand, one hundred twenty-one".